I've been working with ObjectHandles in few Flex projects but this is the first time I've implemented
it in a Flex 4 based project. Changing the Z-Order of the ObjectHandles is a bit different here,
since Flex 4 uses the IVisualElement object to control the index of each element in a container.
Below is a sample that allows moving objects backwards and forwards either one step
at a time or all the way.
Source code can be found here.